Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

29 Cards in this Set

  • Front
  • Back
Distinguish between Proximate and Ultimate questions

Proximate-asking about what happened

Ultimate-Asking why it happened

Use examples in class to place animal behavior into an evolutionary context
Migration of birds based on the temperature that they best reproduce at.
Define sexual selection
Some individuals out-reproduce others of a population because they are better at securing mates
Provide an example of sexual selection
Antlers of a deer, feathers of a peacock, any instance where a male looks different than a female
Distinguish between intersexual selection and intersexual selection

Intersexual selection-where males show off certain features to try to win over females, and females choose based on the investment of producing offspring

Intersexual selection-Males fight over females without intervention of female

Understand why females are the choosy sex
Because they have to make the investment of taking the time and energy to raise offspring
Define a biological population

A group of organisms at a certain time and place that have the ability to reproduce

define population density
How many organisms live within a certain, described area
How do scientists measure population density
Scientists will mark and recapture animals within a certain area, then be able to make estimates about how many organisms live in the whole area
Define dispersion
pattern of distribution of populations (uniform, clumped, random)
3 types of survivorship curves
Straight, steady then big drop, big drop then steady
Develop a conceptual model of population growth
logistic graph
Understand factors that limit population growth
Resources, competition with other organisms
define a community
Populations of different species that share space sand time with their ecology
Both species benefit
One species is positively affected, and the other is negatively affected
Both species are negatively affected
One species is positively affected, and the other species is neither positively or negatively affected
Top down- and bottom-up effects

Top-Down: top of the food chain affects all the rest

Bottom-up: bottom of the food chain affects all the rest

Identify the two major abiotic factors that determine terrestrial biomes
Precipitation and temperature
Differentiate between Primary Production and Net Primary Production

Primary Production: the link between abiotic factors and life

Net Primary Production: leftover energy used to generate biomass

Aquatic Abiotic Factory
Depth, light, temp, salinity
Define Biodiversity
The variety of life on Earth at all its levels, from genes to ecosystems, and the ecological processes that sustain it
Define species diversity
Different species and their abundance
Identify Biodiversity hotspots
Usually by large areas of water
Define and Endemic species
A species that is unique to a defined geographic location
Know all about 6th mass extinction event

Caused by humans


Pollution, overpopulation, habitat loss

Greenhouse gasses


Warms the planet by greenhouse effect

Consequences include more gasses being released from ocean, similar to Permian extinction event